/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.extensions.sql;



import com.bff.gaia.unified.sdk.schemas.Schema;

import com.bff.gaia.unified.sdk.values.PBegin;

import com.bff.gaia.unified.sdk.values.PCollection;

import com.bff.gaia.unified.sdk.values.POutput;

import com.bff.gaia.unified.sdk.values.Row;



/** This interface defines a Unified Sql Table. */

public interface UnifiedSqlTable {

  /** create a {@code PCollection<Row>} from source. */

  PCollection<Row> buildIOReader(PBegin begin);



  /** create a {@code IO.write()} instance to write to target. */

  POutput buildIOWriter(PCollection<Row> input);



  /** Whether this table is bounded (known to be finite) or unbounded (may or may not be finite). */

  PCollection.IsBounded isBounded();



  /** Get the schema info of the table. */

  Schema getSchema();

}